On Thu 13 September 2012 03:01:34 Laurent Pinchart wrote:
Hi Hans,
On Wednesday 05 September 2012 10:28:30 Hans Verkuil wrote:
On Wed 5 September 2012 10:04:41 Jun Nie wrote:
Is there any summary for this summit or presentation material? I am looking forward for some idea on CEC. It is really complex in functionality. Maybe other guys is expecting simiar fruite from summit too.
Yes, there will be a summit report. It's not quite finished yet, I think.
With respect to CEC we had some useful discussions. It will have to be a new class of device (/dev/cecX), so the userspace API will be separate from drm or v4l.
This is a repeat of a comment from the KS discussion: what about using the socket API instead of a device node ?
What benefit would that give me? I frankly don't think it maps that well to a socket API. Some parts of the CEC protocol are more or less network like, but others are point-to-point. Basically CEC is a mess, protocol-wise, and I much prefer a char-device where you have more flexibility.
Regards,
Hans
And the kernel will have to take care of the core CEC protocol w.r.t. control and discovery due to the HDMI 1.4a requirements.
I plan on starting work on this within 1-2 weeks.
My CEC presentation can be found here:
http://hverkuil.home.xs4all.nl/presentations/v4l2-workshop-cec.odp